Photogrammetry for accurate model deformation measurement in a supersonic wind tunnel
File(s)Gramola2018_Article_PhotogrammetryForAccurateModel.pdf (2.69 MB)
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Author(s)
Gramola, M
Bruce, PJK
Santer, M
Type
Journal Article
Abstract
The interest in adaptive devices for high-speed applications leads to the need for an accurate and reliable technique to obtain model deformation measurements during experiments. Point-tracking photogrammetry has been applied to supersonic wind tunnel testing, using four Phantom high-speed cameras placed on either side of the working section, where coded targets were applied to the surface of interest. Calibration experiments on a solid plate beneath a =1.4 normal shock and a =2 oblique shock allowed the quantification of the sources of optical distortion, namely the wind tunnel glass windows and aerodynamic effects (the lower pressure in the working section and the interaction between shock waves and the boundary layer). A correction matrix was applied to account for the optical distortion due to the glass, and the root-mean-square error due to aerodynamic effects (<0.03 mm) is believed to be negligible for applications with significant displacements (of the order of 1 mm). The application of photogrammetry to a flexible shock control bump has shown that the bump shape can be detected accurately, while disclosing some complex 3D effects that could not have been revealed by spanwise-averaged techniques such as schlieren photography.
Date Issued
2019-01-01
Online Publication Date
2019-01-01
2019-01-07T15:35:28Z
Date Acceptance
2018-11-15
ISSN
0723-4864
Publisher
Springer (part of Springer Nature)
Journal / Book Title
Experiments in Fluids
Volume
60
Issue
1
Copyright Statement
© 2018 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Source Database
web-of-science
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000452031500003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/K503381/1
Subjects
Science & Technology
Technology
Engineering, Mechanical
Mechanics
Engineering
0913 Mechanical Engineering
0915 Interdisciplinary Engineering
0901 Aerospace Engineering
Fluids & Plasmas
Publication Status
Published
Article Number
8
Date Publish Online
2018-12-03